First determine the starting winding, can be measured with a multimeter, the one with the largest black resistance is the starting winding (capacitor line), the one with the smallest black resistance is high speed, the resistance value is in the middle of the low speed, red-1 speed (high) blue-2 speed (low) yellow capacitor-zero line is black, yellow capacitor, black and then connected to one of the power supply lines, The other line of the power supply is connected to the two-speed switch and divided into two speeds.